Home / 138,006.61-190,450.19-76,753.66

Finding the Fourth Proportional to 138,006.61, 190,450.19 and 76,753.66

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Solution

The fourth proportional to 138,006.61, 190,450.19 and 76,753.66 is: 105,920.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,006.61 : 190,450.19 = 76,753.66 : x
  2. Step 2: Convert to fraction form
    138,006.61/190,450.19 = 76,753.66/x
  3. Step 3: Cross multiply
    138,006.61x = 190,450.19 × 76,753.66
  4. Step 4: Simplify right side
    138,006.61x = 14,617,749,130.20
  5. Step 5: Solve for x
    x = 14,617,749,130.20/138,006.61
  6. Step 6: Final answer
    x = 105,920.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.